1. I enjoy writing with a partner because it gives me someone to talk about the story with who is also shaping the story. Usually, Ms. Lackey gives me a handful of elements, then I go off to plot it. She reads that, adds more elements, and I do the scene-by-scene breakdown, which she also reads. Then the writing starts. Sometimes she suggests a scene, and sometimes she writes one, which I drop into the manuscript in the appropriate place. I do the first draft, she tweaks it, and then it goes off to Tor. Tor has notes at that point, so it comes back to me for the revision draft, with input from Ms. Lackey.
2. There are certainly more books plotted in the "One Dozen Daughters" series, but Tor has not yet requested another one.
Re: Multiple Questions
2. There are certainly more books plotted in the "One Dozen Daughters" series, but Tor has not yet requested another one.